Improvement in brick and tile machines



U ITED. STATES:

ATET Gratte.

. 1 zDoKisTnEE-ii Ori-SALEM, 'OHIO- ,r L

Specification forming part -cfLctter's-Pagtent No. 35,843; dated July 8,1362A." 'Y

.'I' all whom, it may concern.-

Be itY known that I, ZADOK STREET, of.` Salemtin the county of"Columbiana and "State ofA Ohio, have invented a new and useful Ma chinefoi-Making Bricks and Tiles; and I do herebydeclare the following to bea full and exact description oft-he same, reference being afterwardpressed equally into the several molds; second, in an improved devicefor separating the surplus clay'from that within the molds beforewithdrawing the latter.

To enable those skilled in the art to fully understand and use myinvention, I will proceed to describe its construction and operation,

A represents the grinding-mill, having the' customary toothed shaft, B,which is rotated by a sweep, f?. caare'apertures in the lower part ofthe grinding-mill, communicating with pressing-machines constructed asfollows:

D is a shell or box open at the top, serving to receive the clay as itvcomes from the mill.

E is a sliding gate employed to close the apertures a, and thus separatethe clay-which is to be pressed into the mold from that which remains inthe mill. The said gate may be j drawn down by means of a treadle, F,con

nected to it by means of links f and retracted-- by springs G.

His the follower hinged by one edge to the gate E, near the lower edgeof the latter.

' n is a leverfor forcing down the followefto press the clayzinto themolds, as hereinafter, explained.V

1- is a movable mold provided-with partir-- tiens i, Awhich-are formedof glass or analogous substance adapted toimpa'i't a smooth surface tothe-bricks. f'fT-bfbnttdm', ends, and sides f the molds are' alsqlinedwith the-.same mate` J J J are barssccnred acrossv the boxDimmediatelyabove and corresponding with the positions of the partitions i. l f

l is awire cutter attached at each end to a bar, L, sliding on guides Zl. This cutter is -more clearly represented in Fig. 3.

The operation of the machine is as follows" The box D havingr becomefull of tempered clay from the mill A, the gate E is forced down bymeans of the treadle F, closing the communication with the mill. VThehinged follower H is then drawn down by means of' the lever h, theeffect of which is to force the clay at ence downward and outward,completely filling the molds to their extreme outer ends.` The bars Jhave the effect of separating the clay at a distance above the molds, sothat an equalquantity may be pressed into each, and equality in themanufacture 'thus insured.

Vheu thebrieks infthe'molds .are sni'li'ciently pressed, the followerHand the gate E are allowedAto rise. The wire or cutter K isl then drawnforward, producing a smooth and even separation between the clay withinthe molds and that which is tube left within the box D.

4ill/*bile the clay is passing from the mill into the boitv a carrier-onone side of the machine v pushes in an emptymold while another carrieron the other Aside withdraws thefull one.

By cuttingthe clay on alevel with thetop of v the molds beforewithdrawing thelatter bricksA are produced as uniform and squarein sizeand shape as those made by hand, the surface not being disturbedzor putout of shape, as is j commonly the case in the act of withdrawing thefilled molds fromtbrick-Inachines.

The lining of the molds with glass facilitates very much the removal ofthe bricks from the molds, and with but little labor imparts to thebricks as' smooth a `surface asis ordinarily 'produced under heavypressure. The ease of withdrawing the bricks likewise permits the Aclaybeing worked in a much drierand stnfer condition than isordinarilypracticable, and hence the bricks better retain their form.

' ,Tiles of any size and shape, dictated by their purpose and thecharacter' of the'clay used, are made in the 'manner above explained byhay" .ing the molds and other partso'f form and dimensions adaptedtherefor. l

Similar machines may be applied to the other sides of the mill, but the'one 'showu is deenied .'suioientgteillustrate the principles of theinven'tiou. cut-.off gate..tofclose the aper tures a may, 4ifpreferred,'be maide.to slide up vfrom belowf Crank orcalr'power will beappliedrifneed fulfto force down 'thehinged follower. E'.

- I am aware that it is common to use metallic molds in brick-machines,und therefore do not desire to be understood as claiming thisy as myinvention'.

Having thus described my nvention,what I claim therein as new, auddesire to secure by Letters Patent, s

. 1. The combiuutioii ofthe slidirig gate E,

rllower H, hinged thereto .by its igmr edge,- 'and leverlr,`constructed, arranged, and'operating in the mannerdescribed, to firstsepa,- rate -the clay in the'box D from that within The'wire cutoff K,so arranged and operated,"by means of bars L @md guides Z'Z, as toseparate the surplus clay from that pressed into the molds, ashereiubefore described.

- v ZADOK STREET'. W tnesses v THOMAS KENNETT, PETER AMBLER.

